Strikeforce on Thursday officially announced its Nov. 3 Cormier vs. Mir fight card slated for Chesapeake Energy Arena in Oklahoma City, Okla. It will are live on Showtime at 10 p.m. ET. The broadcast is delayed until 10 p.m. PT on the West Coast.

“As a former Oklahoma State wrestler and two-time Olympian, Cormier has used his wrestling background to immediately put himself among the sport’s elite,” said Strikeforce CEO Scott Coker. “On Nov. 3 he faces his toughest opponent to date in former UFC heavyweight champ Frank Mir, who has beaten legend after legend on his own path to the title. We’ve had a lot of big heavyweight bouts in the history of Strikeforce, but I can tell you, without a doubt, that this is the one that you don’t want to miss.”

Rockhold has defended his belt twice since winning it from Ronaldo “Jacare” Souza last year. He’ll try to make it three straight when he faces Larkin, who is undefeated in 13 professional bouts.

“Rockhold is rapidly approaching his first full year of being middleweight champ and he’s definitely opened a lot of eyes in that time,” said Coker. “He’s beaten three top contenders, successfully defended the belt twice and looked extremely impressive in doing so. This bout could easily be the toughest matchup he’s seen yet due to Larkin’s equally impressive standup.”

Tickets for Strikeforce: Cormier vs. Mir go on sale to the public on Friday, Sep. 14 at 10 a.m. CT. UFC Fight Club members will have the opportunity to purchase tickets to this event Wednesday, Sept. 12 at 10 a.m. CT, via the website www.UFCFightClub.com. A special Internet ticket pre-sale will be available to UFC newsletter and Strikeforce Insider subscribers Thursday, Sept. 13, starting at 10 a.m. CT.